package cn.westv.scps.mqtt;

import java.util.Date;
import java.util.concurrent.ScheduledExecutorService;

import org.apache.log4j.Logger;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttSecurityException;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;

import cn.westv.scps.utils.PropertiesUtil;

public class ClientMQTT {

	public ClientMQTT(String host, String userName, String passWord) {
		this.host = host;
		this.userName = userName;
		this.passWord = passWord;
	}

	// public static String HOST = "tcp://120.77.159.60:1883";
	public String host;
	// public static final String TOPIC = "alarm/lost/wechat/#";
	private static final String clientid = "client11";
	private MqttClient client;
	private MqttConnectOptions options;
	// private String userName = PropertiesUtil.getInstance().getPro("",
	// "mqtt.username");
	// private String passWord = PropertiesUtil.getInstance().getPro("",
	// "mqtt.password");
	private String userName;
	private String passWord;

	private ScheduledExecutorService scheduler;

	public void start() {
		Logger log = Logger.getLogger(PushCallback.class);
		try {
			// host为主机名，clientid即连接MQTT的客户端ID，一般以唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
			client = new MqttClient(host, new String("" + new Date().getTime()), new MemoryPersistence());
			// MQTT的连接设置
			options = new MqttConnectOptions();
			// 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，这里设置为true表示每次连接到服务器都以新的身份连接
			options.setCleanSession(true);
			// 设置连接的用户名
			options.setUserName(userName);
			// 设置连接的密码
			options.setPassword(passWord.toCharArray());
			// 设置超时时间 单位为秒
			options.setConnectionTimeout(10);
			// 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
			options.setKeepAliveInterval(20);
			// 设置回调
			client.setCallback(new PushCallback(client));
			// MqttTopic topic = client.getTopic(TOPIC);
			// setWill方法，如果项目中需要知道客户端是否掉线可以调用该方法。设置最终端口的通知消息
			// options.setWill(topic, "close".getBytes(), 2, true);
			boolean flag = true;
			while (flag)
				try {
					client.connect(options);
					flag = false;
					log.info("mqtt连接成功！");
					System.out.println("mqtt连接成功！");
				} catch (MqttSecurityException e1) {
					e1.printStackTrace();
				} catch (MqttException e) {
					// e.printStackTrace();
					log.info("mqtt连接失败！");
				}

			// 订阅消息

			subscribe(client);

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void subscribe(MqttClient client) throws MqttException {
		int[] Qos = { 1,1 };
		String[] topicArr = { "message/#","sysbiz/#" };
		client.subscribe(topicArr, Qos); 
	}

	public static void main(String[] args) throws MqttException {
		ClientMQTT client = new ClientMQTT("tcp://118.122.93.190:1883", "admin", "password");
		client.start();
	}
}
